Tag：modeling
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Time：2021-10-25
Original link:http://tecdat.cn/?p=14547 Sentiment analysis or opinion mining is an application of text analysis, which is used to identify and extract subjective information from source data. The basic task of affective analysis is to classify the views expressed in documents, sentences or entity features as positive or negative. This tutorial introduces the use of emotion analysis […]
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Time：2021-10-20
On July 15, 2021,HMS Core 6.0Officially launched for global developers. In HMS core 6.0, Huawei has opened a new service for developers – 3D modeling kit, which provides application developers with the functions of automatic generation of 3D object model and PBR material generation based on AI technology, so as to realize the efficient production […]
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Time：2021-10-16
Original link:http://tecdat.cn/?p=7194 This short presentation illustrates the use ofrThe DCC model of the software package and the use of its method, especially another method for Level 2 DCC estimation in the presence of MVT distribution shape parameters. The first phase and pass it to dccfit cl = makePSOCKcluster(10) multf = multifit(uspec, Dat, cluster = cl) Next, the DCC model is estimated. fit1 = dccfit(spec1, data = Dat, fit.control = list(eval.se = TRUE), fit = multf, cluster = cl) In […]
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Time：2021-10-10
If you still remember the unit of feature combination, you will find that the following classification problems belong to nonlinear problems: Figure 1. Nonlinear classification problem. “Non linear” means that you cannot use the form b + w_1x_1 +w_2x_2 The model accurately predicts the label. That is, the “decision surface” is not a straight line. […]
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Time：2021-9-27
character string let str = ‘abdefgh’; console.log(str.indexOf(‘d’) > -1); // true console.log(str.search(‘d’) > -1); // true console.log(/d/.test(str)); // true object let obj = { age: 20 }; console.log(obj.age) // 20 console.log(obj.hasOwnProperty(‘age’)); // true array let arr = [‘a’, ‘b’, ‘c’, ‘d’]; console.log(arr.indexOf(‘d’) > -1); // true console.log(arr.includes(‘d’)); // true The content / inspiration of the […]
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Time：2021-9-25
Abstract: the 2020gde global developer competition KPI anomaly detection has come to an end. The “atomic bomb from introduction to Mastery” from Futian Lianhua street in Shenzhen is lucky to achieve the top 1 in the general list. Here, I share with you the solutions of Futian Lianhua street in Shenzhen in this competition. GDE […]
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Time：2021-8-6
At the 2021 deep learning developer summit wave summit, which ended on May 20, baidu Wenxin Ernie opened four pre training models. This paper makes a detailed technical interpretation of the four open source pre training models.Since 2019, NLP pre training model has made continuous breakthroughs in technological innovation and industrial application, but there are […]
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Time：2021-7-29
1、 Definition of data modeling Data modeling refers to the abstract organization of all kinds of data in the real world, determining the jurisdiction of the database and the organization form of data, until it is transformed into a real database. After transforming the conceptual model abstracted after system analysis into physical model, the process […]
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Time：2021-5-11
one summary Apache Cassandra stores data in tables, each consisting of rows and columns. CQL (Cassandra query language) is used to query the data stored in the table. Apache Cassandra data model is based on query and optimized for query. Cassandra does not support relational data modeling for relational databases. Cassandra data modeling focuses […]
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Time：2021-5-7
Link to the original text:http://tecdat.cn/?p=12174 – introduce This paper compares several time series models to predict the daily growth of the SP500 indexReal volatility. The benchmark is arma-egarch model of SPX daily return series. It is compared with GARCH model 。 Finally, the ensemble prediction algorithm is proposed. Assumptions The actual volatility is invisible, […]
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Time：2021-4-30
Hello everyone, I’m a heartbroken editor for the majority of programmers. I recommend a small tool / source code every day, fill your favorites, and share a little skill every day, so that you can easily save development efficiency, and achieve the goal of not working overtime, not staying up late and not losing your […]
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Time：2021-4-15
Modeling analysis The discussion is based on the case of visitor system Purpose of modeling analysis Analyze which levels, tables and fields the whole data warehouse needs ODS layer: source data layer Docking source data, keep the same granularity as the source data DWD Task: 1. Cleaning. Incomplete data Expired or invalid data 2. Conversion […]
